Kinematic Response of End-Bearing Piles under the Excitation of Vertical P-Waves Considering the Construction Effect

Dai, Denghui; Zhang, Yanjie; Zhang, Yunfei; Wang, Zhanbin; Li, Zhen‐Ya

doi:10.3390/app12073468

Cited by 5 publications

(1 citation statement)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The interaction between piles and foundation soils was studied for the past five decades [11]. The scientific and technical literature presents various models of the interaction between the foundation soil and the prefabricated piles introduced by shocks and/or vibrations; analysis and calculation models are of three types: empirical/experimental models, theoretical models and engineering models [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response of Vibratory Piling Machines for Ground Foundations

2022

View full text Add to dashboard Cite

Vibrating technological equipment for the introduction of piles and columns into the ground of construction foundations (named vibratory piling machines) is crucial in the process of building stable and resilient foundations for civil engineering, hydrotechnical construction, special construction (e.g., military constructions), bridges, roads and industrial platforms. During the works carried out by the construction companies in various geographical areas of Romania, particularities of the dynamic technological regimes influenced by the nature of the land were identified at the deep introduction of the construction elements in the form of piles or circular (tubular) columns. The results of applied research, rheological modeling and optimization of vibrating equipment, highlight the need for an analytical approach that takes into account the parametric variations of the elastic and damping characteristics of some categories of soils on the depth of piles or foundation columns. In this context, the paper presents the calculation model with the dynamic response for the vibrating equipment of insertion with disturbing forces of 200–1250 kN for piles or columns with lengths of 10–30 m. The novelty of the research study consists in the linear rheological model, which was adopted in the form of a Maxwell–Voigt–Kelvin schematic of the type (E-V)–(E|V), with a discrete variation in four values for stiffness and damping of the soil, as the piles or columns vibrate and advance in the ground foundation. Practical experience of the authors in the field of using vibrogenerators for the introduction of piles in various types of ground foundations led to the adoption of the rheological model with variable damping coefficients depending on the depth of penetration into the soil. The curves of the dissipated power confirm the experimental data obtained in situ, in accordance with the rheological indoor tests of the different types of soil foundations.

show abstract